en-us	Is this patient infected with the novel coronavirus? 
zh-cn	如何判断这位病人是否患了新冠肺炎？

en-us	A CT scan can hold the answer.  
zh-cn	CT检查里包含了线索。 

en-us	Whitening, unusual spots or hazy increases in lung density are all cues of COVID-19. 
zh-cn	肺部发白、有异常斑点或磨玻璃密度影都是新冠肺炎的部分征兆。 

en-us	The signs are pretty clear, but here’s the problem – 
zh-cn	–患病特征是很明显的，那么问题来了。 

en-us	A doctor spends about 15 minutes analyzing one case. 
zh-cn	医生对一个病例的CT影像肉眼分析耗时大约为15分钟， 

en-us	Luckily, with the help of AI, CT scans can be interpreted in 20 seconds with an accuracy rate of 96 percent.  
zh-cn	所幸在人工智能的帮助下，在20秒内就可对新冠肺炎疑似病例CT影像做出判读，识别准确率达96%。 

en-us	So how does AI work? Let me explain. 
zh-cn	那么AI是如何做到的呢？我来解释下其中的原理。 

en-us	Convolutional neural network is an important branch of AI.  
zh-cn	卷积神经网络是AI的一个重要分支。 

en-us	The algorithm can automatically recognize clinical telltale signs by combing through over 5,000 CT scans.  
zh-cn	这个算法可以通过阅读分析超过5000张CT图片来自动学到这些临床视觉特征。 

en-us	Simply put, the algorithm learns new input just like children, except it is much faster and can be trained in a week.  
zh-cn	通俗地说，这个学习过程和人类儿童的学习过程类似，只不过速度要快得多，一般一周内就可以训练好。 

en-us	First, the image is automatically analyzed using a deep learning classifier to detect abnormalities. ， 
zh-cn	首先，深度学习分类器会自动分析图像以检测异常。 

en-us	After that, lungs images are segmented and finally, a massive extraction of texture features is applied. 
zh-cn	然后对肺部图像进行分割，最后对纹理特征进行大规模提取。 

en-us	With that, AI can instantly distinguish between the lungs of a patient with common viral pneumonia and that of a COVID-19 patient. 
zh-cn	通过这个手段，AI可以快速鉴别新冠肺炎影像与普通病毒性肺炎影像的区别。  

en-us	AI can also directly calculate the number and size of lesions and determine how severe the case is. 
zh-cn	此外，AI还能直接算出病灶部位的占比比例，进而量化病症的轻重程度。  

en-us	This move can boost the efficiency of the double checks on diagnosis. 
zh-cn	此举可以大幅提升医生二次核查CT图像的效率。 

en-us	It was first put into use at Xiaotangshan Hospital in Henan Province, and nearly 100 more hospitals in China are currently eyeing this technology.
zh-cn	除了率先落地的河南郑州小汤山医院，该算法还将在中国近100家医院落地。